Donnerstag, 31. März 2011, 09:30–09:50, 30.45: 201

One approach to quantum field theory is the study of nets of von Neumann algebras on a given space-time.
In this operator algebraic approach lately a new construction of local and time-translation
(but in general not conformal) covariant nets on Minkowski half-plane
was given by Longo and Witten by taking as input
a chiral conformal net and an element of a semi-group associated to the net.
The elements of this abstractly defined semi-group can be seen as deformations of the trivial (conformal) boundary net.

We investigate the construction of non-trivial elements for a family of chiral nets,
which therefore give rise to further boundary quantum field theory models.